diff --git a/pom.xml b/pom.xml
index 8dc0110..160aaa5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -344,7 +344,7 @@
            binding; the assembly puts this back into the executable jar. -->
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-classic</artifactId>
-      <version>1.6.4</version>
+      <version>1.6.6</version>
       <scope>provided</scope>
     </dependency>
     <dependency>